Combine: In a small bowl, add ½ cup sour cream, ¼ cup mayo, 3 tablespoons fresh dill, 1 teaspoon garlic, 1 teaspoon fresh lemon juice, ¼ teaspoon kosher salt, and ⅛ teaspoon ground black pepper; stir to combine.
Adjust: Taste and add additional dill or garlic, as needed.